Home / 2,271.66-3,134.32-1,387.14

Finding the Fourth Proportional to 2,271.66, 3,134.32 and 1,387.14

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Solution

The fourth proportional to 2,271.66, 3,134.32 and 1,387.14 is: 1,913.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,271.66 : 3,134.32 = 1,387.14 : x
  2. Step 2: Convert to fraction form
    2,271.66/3,134.32 = 1,387.14/x
  3. Step 3: Cross multiply
    2,271.66x = 3,134.32 × 1,387.14
  4. Step 4: Simplify right side
    2,271.66x = 4,347,740.64
  5. Step 5: Solve for x
    x = 4,347,740.64/2,271.66
  6. Step 6: Final answer
    x = 1,913.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.